Machine-brake.



J. G. MoGEE. MACHINE BRAKE. APPLICATION FILED APR. 6, 1914.

-/7 3 mm 7/5 (I;

Br immw-g A Tron/ms Patented Jan. 19, 1915.

JOSEPH CABTLAND MOGEE, OF GRENADA, MISSISSIPPI.

Machine-BRAKE.

messed Specification of Letters Patent.

Application filed. April 6, 191 Serial No. 829,867.

To all :whomt't may concern:

l 3e it known that I, JOSEPH C. MoGnn, a citlzen of the United States, and a resident of Grenada, in the county of Grenada and State of Mississippi, have invented a new and useful Improvement in Machine-Brakes, of which the following is a specification.

My invention is an improvement in machine brakes, and. has'for its object to pro vide a brake, especially adapted for use with fans for cooling buildings or for producing currents of air wherever desired, and especially fans driven by spring motors, wherein the brake is arranged to engage the fan ,directly, for holding the fan against movement during the winding of the motor, or at any other time, the said mechanism being releasable.

In the drawings :Figure 1 is alongituginal lateral flange 4t and 5 respectively, and I the flanges are lapped outside of the body. The ends of the body are bent outwardly and backwardly as' shown at 6, to form flanges overlying the body, and'a door 7 of arc-shape is arranged between the ends of the body. Each end of the door is provided with an inwardly and backwardly bent flange 8, overlying the door in spaced relation, and the flanges 8 engage beneath the flanges 6 to hold the door in place. The door is also provided witha pair of handles 9, one of the handles being near each end of the door and transversely thereof.

The casing is supported by plates 10, each of which is secured to a base 11, of wood or like material. Each of the plates 10 as shown more particularly in Fig. 1, is of greatest'width at 'its iowest end, and the said end rests upon the upper face of the base. The upper end of each of the plates is concave to fit the body of the casing, and

60 the plates engage the casing just inside of the flanges 4 and 5 of the heads! A series of disks, four in the present instance, is arranged within the casing, one of the disks 12 being near the head 2, another of the. disks 12 being near the head 3, and the other disks 13 and 13 being arranged alongside each other in spaced relation at the center of the casing. The four disks are connected to eachother in spaced relation and to the heads 2 and 3, also in spaced relation, by means of three rods 14. Each rod is threaded at its ends and intermediate its ends and passes through'registering openvings in the disks andheads. Arbors 15 are arranged on each rod between the disks 12-12 and the heads 2 and 3, and another arbor 16 is arranged on each rod between the disks 13 and 13*. the dis s 12 and 12 from the heads 2 and 3, and a nut 17 is threaded on to each rod adjacent to each disk 12 and 12 and each head 2 and -The nuts 17 clamp the disks and the heads against the opposite ends of the arbors 15, and other nuts 18 are threaded on to each rod adjacent to each disk 13 and 1 The disks 1212 13-13 support the m t'or'mechanism for the fan. The said mechanism comprises a spring shaft 19, journaled transversely of the four disks, and extended beyond the head 2. A coil spring 20 of suitable width and thickness is wound'on the shaft between the disks 12 and 13, one end of the spring being secured to the disk and the other end beingsecured to a-rod 21, supported by the disks 12 and 13, parallel to the shaft 19. The ends of the rod are threaded and are engaged by nuts 22 at the outer faces of the disks 12 and 13 respectively. A gear wheel 23 is secured to the shaft 19, between the disks 12 and 13, the said gear wheel having a hub 24-, which is fitted on the shaft and pinned thereto as indicated at 24 The gear wheel meshes with a pinion 25, on a shaft, 26, journaled between the disks 12 and 13, and the shaft The arbors 15 space Patented Jan. 19, 1915.

' ions 25, 28, 31 and 34 and the gear wheels with a gear. wheel 33, which meshes with a pinion 34 on another shaft 35, and-a gear wheel 36 on the shaft 35 meshes with the pinion 37 on the fan shaft 38. The shafts 26, 29, 32 and 35 are all journaled in parallel relation with respect to each other and to the shaft 19, and between the disks l2 and is rotated under the influence of the spring 20 the train of gears constituted by thepin- 27,30, .33 and36 will drive the fan shaft 38 at a higher rate of speed, the said train of gears being a speeding up train provided for purpose.

. The shaft 38 which carries the fan is pointed at each end as shown at 39 and 39. The point 39 of the shaft is seated in a step bearing 40, which is secured to the disk 13", by means of lock nuts 41, arranged on opposite .faces of the disk. The shaft passes through openings in the disk 12 and in the head 3, and'the point 39 isengaged by the inner end of a' set screw 42, which is threaded through 'a nut 43, held in alinement with the shaft 38, by means of angular bracket I arms 44.

The arms 44 are integral with the nut at one end, and extend from thenut radially at angular intervals of 129. Near the periphery of the casing the arms are bent toward the casing, and the inner end of each arm is provided with a laterally extending perforated lug 45, which engages the adjacent rod 14, and the adjacent nut '17 is arranged outside of the lug to clamp the lug to the outer face of the head 13.

The fan comprises a central disk hub46, rigidly secured to the fan shaft near the pointed end39, and'four wings or vanes 47 extending from the disk hub in spaced relation, and the said wings or vanesare inclined spirally with respect to the shaft. The shaft 48 shown in Fig. 3-isjournaled in bearings 49 on the outer face of the head 3, and the said shaft is provided at one end with a transversely extending finger piece 50, and at the other end withan angular portion 51, the said portion extending at right angles to the shaft, and being inclined with respect to the finger piece 50.

The free end of the lug 51 isbeveled as shownat 52, and the shaft is provided with a radial wing or vane 53, intermediate its ends, and between the bearings 49. The bracket arms 44 in addition to their function of supporting the nut or hearing 43 act also as a guard for the fan to prevent injury to the fan or to prevent injury to persons from the fan. That portion of the shaft 19 which extends beyond the head 2-is provided with a transverse pin 54, for engaging a trans; verse slot inthe barrel of a key, indicated in I 1 shaft 19 to release the It willbe evident that when the shaft 19 engagement by full line position of Fi the head 3 near the periphery thereof, by

and that pormeans of rivets 56, or the like,

the head is tion of the rod connected to offset inwardly from The lower end of the as shown in Fig. 1, and is in position for the wing or-vane 53 on the shaft 48.

' The rod'normally holds the shaft in the 1, that is, with the beveled surface 52 of t e lug- 51 in engagement with the rear face of the disk hub 46. The shaft 48 is movable longitudinally in its hearing, as indicated in dotted lines in Fig. 2, and when the shaft is moved inwardly to its fullest extent, the beveled end 52 of the lug will engage the, disk hub near the shaft 19. When the shaft 48 is moved The operation of the device is as lows :-When it is desired to wind thelmo- P tor, the shaft 48 is moved into the dotted line position of Fig. 2, which is the full line position of Fig. 1. The fan is now since it may take the the body of the rod. rod is bent inwardly prevented from movement, and the spring 20 may be wound by means of the key 55.

After the spring has been wound, and it is desired to start the fan, aha shaft 48 is moved into the full line position of Fig. 2, which is the dotted line position of Fig. 1.

The fan is now free to move and it will be driven until the spring runsdown. Thefan 115.

shaft being supported in the manner shown, may be easily adjusted to run smoothly and freelyand with a minimum amount of fric tion.

I claim I In a device of the character specified, a motor, and releasable means for preventing movement of the motor, said means comprising a shaft having an angular lug for engaging a moving part of the motor frictionally to hold the same from movement, said shaft being mounted to oscillateand to move longitudinally, and having a finger piece at i its outer end for permitting the shaft to be 1,12e,eeo

moved, and resilient means in connection motor, said vane being releasable from the with the shaft for forcing the lug into conrod when the shaft is moved longitudinally 1o tact with the moving part of the motor, said in the proper direction.

means comprising a radial vane extending longitudinally of the shaft, a resilient rod JOSEPH GARTLAND' MCGEE' fixed at one end and engaging the vane at Witnesses: the other, andrnormally pressing the shaft J. L. BARNARD, in a direction to cause the lug to engage the O. L. KIMBROUGH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 4 

